E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/22 (2006.01) B01F 17/00 (2006.01) B01F 17/52 (2006.01) C09K 8/08 (2006.01) C09K 8/10 (2006.01)
Patent
CA 2197360
The invention involves biopolymer/oil suspension composition for the oil service industry, most particularly drilling and completion fluids, which provide such fluid a variety of desirable properties. Biopolymers include water soluble polymers and water swellable polymers. Such biopolymer/oil suspension compositions are essentially mixtures of biopolymers such as cellulosics in an oil medium with a specific anti-settling additive. The invention is particularly directed to providing enhanced anti-settling properties to such bipolymer/oil compositions; that is, the ability of the biopolymer/oil composition to retain the bioplymers in suspension prior to the composition being introduced into drilling and completion fluids. The invention in one embodiment is described as a liquid biopolymer-in-oil additive compositions for use in aqueous-based completion fluids containing an agent comprising: a) one or more polyamides, and b) hydrogenated caster oils including castorwax.
Cody Charles
Gambino James
Mardis Wilbur
Mcnally Keith
Rheox International Inc.
Sim & Mcburney
LandOfFree
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